EP1250611A2 - Reflecteur, son procede de production, et panneau a eclairage interieur - Google Patents

Reflecteur, son procede de production, et panneau a eclairage interieur

Info

Publication number
EP1250611A2
EP1250611A2 EP00993796A EP00993796A EP1250611A2 EP 1250611 A2 EP1250611 A2 EP 1250611A2 EP 00993796 A EP00993796 A EP 00993796A EP 00993796 A EP00993796 A EP 00993796A EP 1250611 A2 EP1250611 A2 EP 1250611A2
Authority
EP
European Patent Office
Prior art keywords
reflector
substrate
light
projections
internal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP00993796A
Other languages
German (de)
English (en)
Inventor
Naoki Nakayama
Kanya Mizufune
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
3M Innovative Properties Co
Original Assignee
3M Innovative Properties Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 3M Innovative Properties Co filed Critical 3M Innovative Properties Co
Publication of EP1250611A2 publication Critical patent/EP1250611A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/04—Signs, boards or panels, illuminated from behind the insignia
    • G09F13/14—Arrangements of reflectors therein
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/10—Construction
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/12—Reflex reflectors

Definitions

  • the above light-transmissive retroreflective sheet is preferably a so-called prism-type retroreflective sheet comprising a number of cube-corner prisms.
  • the prism-type retroreflective sheet has a high light transmission, because the cube-corner prisms are made of light-transmissive polymers or glass.
  • the retroreflectivity of a prism-type retroreflective sheet is developed by the effective use of interfacial reflection between the prism surfaces and an air.
  • the backside of a light-transmissive retroreflective sheet (that is, a surface which is illuminated with the light from an internal light source) is usually flat.
  • the light from the light source is illuminated from a direction having a relatively small angle from the normal line of the backside of the reflective sheet (that is, a direction relatively close to the normal direction)
  • the light easily propagates through the reflective sheet.
  • the light which is illuminated from a direction having a relatively large angle from the normal line of the backside of the reflective sheet (that is, a direction relatively remote the normal direction), tends to be reflected by the backside of the sheet.
  • the depressions may function as converging lenses to increase the amount of light introduced in a retroreflective sheet.
  • a prism-type retroreflective sheet which comprises a transparent prismatic film carrying prismatic reflective elements such as cube-corner prisms on its backside, and a sealing layer laminated on the backside to encapsulate the prismatic reflective elements under the sealing layer.
  • the surface of the transparent film (the flat surface carrying no prismatic reflective elements) functions as a reflective surface.
  • a preferred shape of a prismatic projection of a prismatic film is a triangular pyramid which is called a "cube corner". Cube corner prisms can easily increase the reflection luminance and wide-angle observation properties of a prismatic film. Preferred sizes of a triangular pyramid element include a bottom side length of
  • a sealing layer may be a film made of a polyester resin having a total light transmission of at least 40%, preferably at least 50%.
  • polyester resins acrylic resins, polyurethane, vinyl chloride resins, polycarbonate, polyamide, polyvinyl fluoride, polybutyrate, etc. may be used to produce a sealing layer.
  • B a housing 3 having a space 32 which contains the built-in light source 2, and at least one opening continuous with said space 32, and
  • a reflector 1 of the present disclosure which is provided to cover the opening 31 with the backside of the substrate facing the opening 31 of the housing 3.
  • projections on the reflection surface of the retroreflective sheet 11, and depressions on the backside of the substrate 12 are not shown.
  • sign information may be provided on the reflection surface of the retroreflective sheet 11 of the reflector 1. .
  • the opening of the housing was a rectangular shape of 25 cm in length and 27 cm in width, and the depth of the housing (a distance from the opening to the back wall of the housing) was 10 cm.
  • the housing was assembled by connecting white polycarbonate plates, and a pair of COLOR TWIN luminescent lamps 2-27W (manufactured by Matsushita Electric Industrial Co., Ltd.) were used as light sources.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Theoretical Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)
  • Optical Elements Other Than Lenses (AREA)

Abstract

L'invention porte sur un réflecteur comportant un laminé à substrat translucide et une feuille rétroréfléchissante translucide. Ladite feuille fixée au substrat en recouvre la surface. Ce réflecteur doté en totalité de propriétés de transmission de la lumière se caractérise par les dépressions formées au dos du substrat et par les saillants formés sur la surface réfléchissante de la feuille rétroréfléchissante.
EP00993796A 2000-01-17 2000-12-22 Reflecteur, son procede de production, et panneau a eclairage interieur Withdrawn EP1250611A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2000007914 2000-01-17
JP2000007914A JP2001202040A (ja) 2000-01-17 2000-01-17 反射材、反射材の製造方法および内照表示装置
PCT/US2000/034927 WO2001053858A2 (fr) 2000-01-17 2000-12-22 Reflecteur, son procede de production, et panneau a eclairage interieur

Publications (1)

Publication Number Publication Date
EP1250611A2 true EP1250611A2 (fr) 2002-10-23

Family

ID=18536267

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00993796A Withdrawn EP1250611A2 (fr) 2000-01-17 2000-12-22 Reflecteur, son procede de production, et panneau a eclairage interieur

Country Status (5)

Country Link
US (1) US20010021110A1 (fr)
EP (1) EP1250611A2 (fr)
JP (1) JP2001202040A (fr)
AU (1) AU2001229113A1 (fr)
WO (1) WO2001053858A2 (fr)

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US6626544B2 (en) * 2001-03-28 2003-09-30 Reflexite Corporation Prismatic retroreflector having a multi-plane facet
KR100698034B1 (ko) * 2001-11-09 2007-03-23 엘지.필립스 엘시디 주식회사 직하형 백 라이트
US7126589B2 (en) * 2002-05-29 2006-10-24 Au Optronics Corporation Touch control panel
TW573181B (en) * 2002-12-10 2004-01-21 Benq Corp Direct backlight module
US20070031641A1 (en) * 2003-09-05 2007-02-08 3M Innovative Properties Company License plate for back illumination and method for making same
JP2005084477A (ja) * 2003-09-10 2005-03-31 Matsushita Electric Ind Co Ltd 導光板およびそれを用いたプラズマディスプレイ装置
JP4246593B2 (ja) * 2003-10-08 2009-04-02 出光興産株式会社 光反射用ポリカーボネート系樹脂シート及びそれを用いた光反射用積層体
WO2005054909A1 (fr) * 2003-12-02 2005-06-16 Nippon Carbide Kogyo Kabushiki Kaisha Article retroreflechissant sous forme de cube pyramidal triangulaire possedant une surface laterale reflechissante incurvee
ES2293164T3 (es) * 2004-04-07 2008-03-16 3M Innovative Properties Company Conjunto de placa de matricula que comprende una fuente luminosa y una placa de matricula con iluminacion desde la parte posterior.
US20060080874A1 (en) * 2004-10-18 2006-04-20 Arnold Eberwein Dynamic message sign
JP2006284779A (ja) * 2005-03-31 2006-10-19 Stanley Electric Co Ltd 蛍光性再帰反射型内部照明表示装置
US8344238B2 (en) * 2005-07-19 2013-01-01 Solyndra Llc Self-cleaning protective coatings for use with photovoltaic cells
US7815355B2 (en) * 2005-08-27 2010-10-19 3M Innovative Properties Company Direct-lit backlight having light recycling cavity with concave transflector
KR101298786B1 (ko) * 2005-08-27 2013-08-22 쓰리엠 이노베이티브 프로퍼티즈 컴파니 조명 조립체 및 시스템
US7537374B2 (en) * 2005-08-27 2009-05-26 3M Innovative Properties Company Edge-lit backlight having light recycling cavity with concave transflector
US20070047228A1 (en) * 2005-08-27 2007-03-01 3M Innovative Properties Company Methods of forming direct-lit backlights having light recycling cavity with concave transflector
GB2433637A (en) * 2005-12-21 2007-06-27 3M Innovative Properties Co Semi-transparent retroreflective material
GB0602105D0 (en) * 2006-02-02 2006-03-15 3M Innovative Properties Co License plate assembly
CN101153993A (zh) * 2006-09-29 2008-04-02 鸿富锦精密工业（深圳）有限公司 直下式背光模组
CN101387381A (zh) * 2007-09-14 2009-03-18 富士迈半导体精密工业（上海）有限公司 光源模组
KR101049738B1 (ko) * 2011-01-26 2011-07-19 주식회사 큐텍 광학시트를 포함하는 조명기구
US20130265791A1 (en) 2012-04-10 2013-10-10 Ford Global Technologies, Llc Vehicle light assembly with photon recycling
US9476557B2 (en) 2013-01-08 2016-10-25 Ford Global Technologies, Llc Low profile highly efficient vehicular LED modules and headlamps
US9464785B2 (en) 2013-01-08 2016-10-11 Ford Global Technologies, Llc Vehicular light guides and assemblies with uniform illumination
US9435504B2 (en) 2013-10-30 2016-09-06 Ford Global Technologies, Llc Apparatus for radiating light from a virtual source
US10060592B2 (en) 2014-07-31 2018-08-28 Ford Global Technologies, Llc Dual beam pattern vehicular lighting assembly
KR101601531B1 (ko) * 2014-11-07 2016-03-10 주식회사 지엘비젼 조명장치
EP3221734A1 (fr) * 2014-11-17 2017-09-27 SABIC Global Technologies B.V. Articles réfléchissants et procédé de fabrication
KR20170138478A (ko) * 2015-04-17 2017-12-15 쓰리엠 이노베이티브 프로퍼티즈 컴파니 태양광 모듈과 함께 사용하기에 유용한 광 방향전환 필름
US11746988B2 (en) * 2021-07-22 2023-09-05 Nicole McKee Portable electronics interchangeable light cover

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US4952023A (en) * 1988-03-18 1990-08-28 Minnesota Mining And Manufacturing Company Internally illuminated retroreflective sign
US5008783A (en) * 1988-04-18 1991-04-16 World Auto Plate Ltd. Number plate including luminous characters
WO1991019857A1 (fr) * 1990-06-20 1991-12-26 Giorgio Corradi Bande de marquage
US5169707A (en) * 1991-05-08 1992-12-08 Minnesota Mining And Manufacturing Company Retroreflective security laminates with dual level verification
US5580156A (en) * 1994-09-27 1996-12-03 Koito Manufacturing Co., Ltd. Marker apparatus
EP0783712A1 (fr) * 1994-10-04 1997-07-16 Minnesota Mining And Manufacturing Company Dispositif de marquage eclaire autonome
EP0972112B1 (fr) * 1997-03-31 2002-11-06 Minnesota Mining And Manufacturing Company Plaque reflectorisee a grand angle d'incidence
JP3661906B2 (ja) * 1997-04-10 2005-06-22 積水樹脂株式会社 内照式標識板

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0153858A3 *

Also Published As

Publication number Publication date
WO2001053858A2 (fr) 2001-07-26
JP2001202040A (ja) 2001-07-27
AU2001229113A1 (en) 2001-07-31
WO2001053858A3 (fr) 2002-01-03
US20010021110A1 (en) 2001-09-13

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